Two-cycle explosion-engine.



H. O. SUGKERT.

TWO GYGLE EXPLOSION ENGINE.

APPLICATION FILED JAN. 2, 190a. Bnnwm) SEPT. 19, 1901.

907,196. Patented Dec.22,1908. IZZ a snnn'rs-snnn'r 1.

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I H. C. SUGKERT.

TWO CYCLE EXPLOSION ENGINE. APPLICATION FILED JAN. 2, 1906. RENEWED um. 19, 1907.

Patented Dec. 22, 1908.

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APPLICATION FILED JAN. 2, 1906. RENEWED SEPT. 19, 1907.

907, 196. Patented Dec. 22, 1908.

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" UNITED STA ES rnrENT OFFICE.

SUCKERT, OF NEW YORK, N. Y.

' TWO-GYCIE ,nxrmsron-nnemn.

Specification "of Letters Patent.

Patented Dec. 22, 1908.

Application filed January 2, 1906, Serial No. 294,063. Renewed September 19, 1907. Serial No. 393,692

' To all whom it my concern Be it known that I, HAROLD O. SUGKERT, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new'and useful Improvements in Two-Cycle Explosion-Engines, of'which the following is a specification, reference being had therein to the accompanying drawings, in which 1 Figure 1 is a longitudinal vertical sectional view taken on a plane parallel with the axis of the drivin shaft; Fig. 2 a sectional view taken on the line IIII of Fig. 1; and Fig. 3 a view similar'to Fig. 1, showing the piston at the other end of its stroke.

One of the main objects of thisinvention is to rovide means for initially compressing the c arge of mixture which is to be delivered into the explosion chamber, and to deliver said compressed charge atsuch a position of the piston and in such 'a manner that the burned gas is driven from the explosion chamber by the inrushing charge of fresh mixture.

Another object of the invention is to deliver this compressed charge of .gas into the explosion chamber at a time when said charge is at its highest initialcompression so that said charge will rush into the explosion chamber and recharge it with fresh gas in the shortest ossible time. 7

These eatures of the invention are of great importance for the reason that in engines of the two-cycle type it has heretofore been ex tremely difficult to secure a full discharge of the burned gas and a full recharge of the explosion chamber with fresh mixture.

It will be apparent to those skilled in the art that if all or practically all of the burned gas is not discharged from the explosion chamber and a full sup ly of fresh mixture is not su plied to said .0 amberthe effectiveness 0 creased.

In the pi esent invention the fresh su plz of mixture is initially compressed to a 1 "1g degree, at a point close to the explosion chamber. It is then delivered into said chamber in such a manner that it is discharged forcibly, and directly, toward the spark plug, driving out throu h the exhaust ports the burned gas and de ivering a supply of fresh mixture around the spark plu thereby insuring proper ignition of eac charge of gas.

Referring to the various parts by numerthe engine will be materially deals, 1 designates the engine cylinder which may be of any suitable construction, and which, for convenience, is shown in the drawing without a cooling jacket. It will, 0

of course, be understood, however, that any suitable form of cooling means may be employed. Within this cylinder is mounted lthe main piston 2 which is cylindrical, and is somewhat longer than pistons of the ordi- -5 nary construction. The lower end of the piston is formed with an upward extending internal hood 3 into which (projects the upper end of a piston rod 4, sai rod being pivotally secured therein by means of a wrist pin 5. The lower end of this piston rod is connected to cranks 6 by means of a crank pin 7; and the cranks 6 are secured to the ends of thetwo sections 8 of the main shaft.

This shaft is journaled in bearings 9 which are suitably mounted in the crank case 10.

Rigidly supported within the piston is a stationary compression-head 11. This head is cylindrical, and the lower ortion of its cylindrical wall 12 fits within t e piston and is provided with a packing ring 13, or other sultable means, toform a gas-tight joint therewith. I The upper portion of said cylindrical part of the com ression-head is slightly smaller in diameter t an the interior diameter of the piston, as shown at 14, to form a slight annular air space around the u per art of said compression-head. This cad 1s formed with depending su porting arms 15, which extend through sots 16 in the lower wall of the piston, the lower ends of said arms being secured to the rigid wall of the crank case, or to the cylinder, as shown at 17in Fig. 2. 4

The iston is formed with an intake 18 whic when said piston is at the end 0 its inta e port 19 to permit a supply of mixture, to pass into the initial com ression-chamber 20 which is formed within t e piston and between the head of the piston and the compression-head. The piston is formed with an outlet port 21, which, when the piston is at the end of its working stroke, registers with the lower end of the port 22 in the cylinder.

This port 22, at its upper end, will register with the discharge port 23 formed in the piston when the port 21 is in register with the lower end of said port 22. The port 23 is formed within an upwardly enlarging discharge-nozzle24 formed on the upper end of the piston 2, the upper enlarged end of ort 95 compression movement, registers with the 65 and to insurea full 0 said port being concentric with said piston, whereby the mixture will be discharged 'at the center of the explosion chamber a considerable distance a ove the exhaust ort 5 and will be directed toward the ignition p ug.

The cylinder is provided with an exhaust port 25 which is so arranged thatit will be Opened slightly before the port 21 registers with the lower end of the ort 22 to ermit '10 the burned gas to partia y exhaust e fore the fresh mixture is discharged into the explosion chamber. L

The operation will be readily understood from the fore oing, but may be briefly described as fo oWs:When the piston has tween the compression-head and the upper end of the piston. By the upward movement of the piston a partial vacuum has been 7 formed in this chamber so that when said ports 18 and 19 register there will be a rapid ow of the mixture into said chamber. During the Working stroke of the piston the mixture in chamber 20 will be compressed, the

degree of compression depending upon the a locatlon of the com resslon-head, 1t being preferably so locate that the mixture in. sald chamber will be compressed to a great degree. At the. extreme end of the Working stroke of the piston the ort 21 will register with the lower end of t e ort 22 and the port 23 will register-with the'upper end of said port 22, thereby permitting the highly compressed charge of mixture in chamber 20 to flow through 'orts 21, 22 and 23 into the explosion cham er-. Because of the great compression of the mixture there will be an extremely rapid discharge into the explosion chamber, the rapidity of the discharge depending upon the de ree of compression of the gas in the chem er 20. The exhaust port 25 is so located that the discharge of urned gases from the explosion chamber will begin before the port 21 is in register with the lower end of port 22, so that the gas in the explosion chamber will be reduced to atmospheric pressure before the fresh charge of mixture is discharged into said chamber. By means of'the upward enlarging ort 23 the mixture from the chamber 20 be directed toward the i nition plug. This will ndt only assist in the discharge of the remainder of the gas through the exhaust port, -but will insure a supply of pure mixture at the point of ignition. It will thus be seen that I initially compress the-mixture at a point as close as possible to the explosion chamber and then dischar e said highly compressed gas into said camber at-the pro er moment and at the proper point to assist in the dischargp of the burned gases arge of fresh mixture.

comes It will be seen that I provide a very simple two-cycle engine wherein gas may be initially compressed to thedesired degree and at a point as close as pdssible to the explosion chamber, so that said highly compressed mixture may be delivered directly into said explosion chamber to rapidly and completely recharge it. Engines of this type have heretofore proved unsatisfactory for the reason that the explosion chamber has not been fully charged with fresh mixture, so

' much of the burned gases remaining therein as to prevent the proper ignition, and reducing the expansive forceof the gas.

t will be readily understood that the shown in the drawings, said drawings merely illustratim the broad principle of the invention, and% desire it understood that. I do not wish to be limited to the form and construction shown.

Having thus described my invention, what ters Patent, is v 1. A gas engine comprising a cylinder, a hollow piston therein, a cylindrical compression head within the piston and rovided with hearing rings near its lower en means for supporting said compression head from the lower end of the cylinderbeyond the oint of piston travel, mixture inlet ports bemg formed in the cylinder wall and in the piston and adapted to register when the piston has completed its compression stroke, whereby mixture will be admitted within the in the iston and in the cylinder wall and adapte to register when pleted its-working stroke, the outlet port in able passage to the cy inder wall at a point above the compression head, whereby the mixture within the iston will be compressed on theworking stro e of the piston and will be delivered into the cylinder when the piston has completed its Working stroke, means carried by the piston to receive the said charge of compressed mixture and delivering it upward into the cylinder at the longitudinal center thereof.

' 2. A as engine comprising a cylinder, a piston t erein, means for reclprocating said iston, a stationary compression-head within the iston, an initial complression chamber being ormed between said ead and piston, means for permitting the mixture to," flow into said compression chamber when the piston has completed its compression stroke, means to permit the compressed mixture to .flow from said chamber into the explosion in line with the piston. g a

the cylinder wall bein connected by a suit-' chamber when the piston has completed its I claim as new and desire to secure by Let-.

piston, outlet ports being formed the piston has com- 80 form of, my engine may be varied from that and provided adapted to 5 ture upward in the center of t sense 3. A two-cycle engine comprising a cylinder formed with inlet and exhaust ports in its wall, a hollow piston therein, said piston serving to open and close the exhaust port at the proper interval and formed with a mixture inlet port adapted to register with the inlet port 1n the cylinder wall iwhen said piston has completed its compression stroke, a' cylinder head supported within the piston with bearing rings to form a tight connection between said piston and said head, said headforming anlnitial com: pression chamber into which the mixture flows through the inlet ports, an outlet-port be placed in communication with the compression chamber and explosion chamber, the piston being provided with an outlet port adapted to place this latter port in communication with the compression chamber, -said piston being also provided with an upwardly enlargin discharge port 7 which is adapted to place t e latter port in communication with the explosion chamber and to direct the initially com ressed mixe explosion chamber and toward the. spark plug. 4. An explosive engine com rising a cylinder formed with inlet and exhaust orts in its wall, a hollow piston therein, sai piston serving to open and close the exhaust port at the pro er intervals and formed with a mixtureinlbt port ada ted to register with the inlet port 1n the cy der wall when said piston has completed its compression stroke,

vwith-a port adapted to place the a compression head supported within the piston, said head form ng; an initial compression chamber into w ich the mixture flows from the inlet ports, an outlet port adapted to be placed in communication with the initial compression chamber and the explosion chamber, the piston being provided atterport in communication with the initial compression chamber when the piston has completed its working stroke, a charge igniting means concentrically located in the explosion chamber atone end thereof, a concentricdischarge nozzle carried by the piston and ada ted to be brought into communication wlth the outlet port from the initial compression chamber when the (piston has completed its working stroke, sai discharge nozz e projecting toward the igniting means and arran ed to extend in close proximity thereto wien the charge is com ressed, whereby the initially compresse fresh charge will flow toward the ignitin means.

to the center of the cylinder, and a ody of fresh mixture will be presented to the ignitingdmeans when the igniting means is operate In testimon whereof I hereunto aflix my signature in t e 1presence of two witnesses this 16th day of ecember, 1905.

HAROLD O. SUCKERT. Witnesses:

' Wm-R. DAVIS,

EMMA KAUFMAnN 

